Combined water heater and heat deflector attachment for furnaces



R. F. sTURGls 2,020,221

COMBIND WATER HEATER AND HEAT DEFLECTOR ATTACHMENT FOR FURNACES Nov. 5, 1935.

Filed May 8, 1955 2 Sheets-Sheet l WIY .SZW

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R. F. STURGIS COMBINED WATER HEATER'AND HEAT DEFLECTOR ATTACHMENT FO FURNACES Filed May 8, 1955 2 Sheets-Sheet 2 Patented Nov. -5, 1935 -"UN1T|-1D STATES PATE-Nr OFFIC. amaai. v f j COMBINED WATER HEATER AND HEAT DEFLEUIOR ATTACHMENT FOB FUB- NACES Raymond F. Sturgis, Elizabeth,V N. J., assignor to .f Michael A. Lisena, Newark, N. J.

Application 8, 1935, Serial No. 20,459

5Claims. ((1122-4165) I Q l This invention relates' to certain new and useful improvements in a combined water;l heater and heat deflector attachment for furnaces. v

'I'he primary object of the invention is to pro- 54 vide a combined water heater and heat deiiector2V attachment for furnaces of the type originally 2 designed for the burning of coal, but converted for the burning of oil and in many' instances the complete utilization of heat units which ow by draft when oil is used as compared with slowly burning coal, the present invention providing an auxiliary water chamber directly in the path of the oil burner fiame and a deiiector for directing the flame vand heat units onto the water jacket of the furnace.

A further object of the invention is to provide a heating apparatus of the foregoing character forl use with either hot water or steam furnaces, the latter being illustrated by way of example in this application with a. piping system for drawing water from the head of the furnace downwardly to the auxiliary heater for superheating thereof and for creating a partial vacuum or suction in the steam pipes and radiators of the direct contact of the.. heat units with the water jacket of the furnacegtor'educe the consumption of fuel and substantially utilize all heat ney. l ,Y

With the above and other objectsin view that will become apparent as the nature of the in- 'vention is better understood, the consists in the novel form, combination and arrangement of parts hereinafter more fully described, shown in the'accompanying drawings andclaimed.

In the drawingsz- 50 Figure 1v is a vertical sectional view of 'a steam ing of coal and converted into an oil burner with the combined water heater and heat deector attachment therein, the water heater being supported within the furnace by pipes forming a 55 part of the circulating system;

units before escape from the furnace to the chim- -heating furnac'e originally designed for the burniary water heater; and

" furnace.

Figure 2 is a horizontal sectional view taken' lon line 2-2 of Figure 1 showing re brick de y iiectors mounted on the auxiliary heater and spaced from the water jacket of the furnace; Figure 3 is a perspective view of the auxiliary 5 water heater showing the ribbed pockets on the' periphery thereof'for the support of spacer bricks to centrally' position the water` heater vwithin the furnace in spaced relation to the water jacket;

Figure 4 is a bottom plan view of the conical l0 heat deector supported centrally of thejauxil- Figure is a fragmentary vertical sectional view, similar to Figure 1,'showing the auxiliary water heater supported by pipes rising therefrom l5 and engaged with the water legs of the furnace to form direct communication between the auxili'ary water heater and water legs.`

vWhile the combined water heater and heat deflector attachment may be associated with hot 20- water furnaces the same is herein illustrated as mounted in the furnace of a steam heating system, the furnace .being of the coal burning ltype and embodying'a base I0 enclosing the usual ash pit I I with a cylindrical waterjacket 25 I2 supported on the base I0 and the steam dome I3 at the upper end of the water jacket, there. being a central pipeA outlet I4 forgexhaust or Vproducts of combustion that leads to a chimney.

Internal water legs I5 arev carried' by thewater 30 jacket. I2.' The piping` system for 'the steam 'radiators or .other heaters includespipes I6 for conveying steam from, the steam dome I3 to the header pipes I 'I from which branch pipes I8 ex'- f vtend to the radiators or other heaters. Y 35 The usual grate structure is removed from the furnace and a burner nozzle I9 from a forced draft oil burner extends into the ash pit area I I of the furnace and is conned within the wall 20 for directing the flame upwardly into the 40 l The auxiliary water heater 2| shown in detail in Figure 3 is in the form of an annular water channel having a stepped central opening therein dening a relatively narrow annular rib 22 at the upper end thereof surrounding the cen- '45 in 'al opening 23. A conical deector 243s seated I in the upper end Aof the opening 23 in the water heater and is provided with ribs 25 upon its lower face to space the deiiector from the wall of the opening 23 and to provide a resh'icted-passage as 50 2 in u-eiiaped ribbed' pockets 21 earned by ine peripheral wall of the water heater as clearly shown in Figures'l and 3.

Vio

at the base of the steam dome I3 and a pipe 3| forms communication between the upper end of the water jacket slightly below the water level and the supporting pipe 23 for purposes presently to appear. A vertical pipe 32 has its'upper end in communication with the steam header I1 while the lower end thereof enters a T-tting 33, the other end of the T-fltting having a nipple connection 3l with the lower end of the water jacket I2 while the side of the T-tting has a pipe connection 35 with the supporting pipe 23 and in which pipe connection 35, a check valve 35 is interposed The water in the water jacket also seeks its level in the pipe 32 as shown in Figure 1.-

The water heater 2| and deilector 24 act to direct the major portion of the flame and heat umts from the burner-onto the water heater and outwardly thereof into contact with the inner face 0f the water jacket I2 and to increase this area of contact, fire bricks aresupported on the upper side-ot the water heater 2| as shown in Figures 1 and 2. 'I'he superposed fire brick is formed of two semi-circular sections that mate to form a ring and each .section carries voutwardly directed block projections 33 that engage the inner face of the water jacket I2 as shown in Figure 2, with the block projections 38 disposed above the spacer block 26. 'I'he flame and heat units passing upwardly between the water heater 2| and water jacket I2 are therefore directed over a larger area of contact with the water jacket by the fire b'ricl: sections 31.

'Ihe deiiectorl 24 is slightly spaced from the walls of the opening 23 in the waterheater to provide an air passage for products of combustion,

but the major portions of the-flame and heat unit are directed onto the water heater 2| and deflected thereby onto the'water jacket |2. Maximimi heat is absorbed by the water heater in the area of the annular rib 22 and the superheated water in such area flows downwardly through the pipe section 3i and upwardly through the pipe 3| to enter the water jacket I2 at the upper end thereof. This direction 'of ow of water outwardly of the-water heater 2| by way of the pipe 33 promotes suction in the upper end of the pipe 23Nwhich acts to draw water from the lower end of-the water jacketand by way of the nipple 34 the pipe 3,5 and upper end of pipe 23 into the-water heater 2|. .It will therefore -be seen that hot water at the upper end of the water jacket is drawn downwardly to circulate through the pipe 35 and into the water heater` 2| for superheating and return now by way of the pipe 3| to the upper end of the water jacket. With this arrangement, maximum heat is radiated to the water heater 2| and water jacket I2, aided bytherebricks 3'|,resultinginaminimum consumption of fuel and accomplishing maximum results. 'I'he check valve'36 in the pipe 35 prevents any back ow of water from the heater 2| and assures the circuitous ow thereof in the direction stated.

In the form of invention illustrated in Figure 5, the s tand pipes 23 and 23 for the support of the water heater 2| are eliminated and in lieu thereof, the waten heater 2| is supported by hanger pipes 39 that depend from the water legs 5 I5 for the support ofthe water heater'2I and to cause a direct flow of superheated water from tli'ev water heater 2| directly upwardly to the waterlegs |5 Also, in this formv ofthe invention the pipe 3| is eliminated. but the water Aflows 1o downwardly from the upper end of the water jacket I2 through the pipe 35 and by wayA of the check valve 35 to the pipe section 23a that communicates with the lower end of the water heater 2|. 1

While there are herein shown and described the preferred embodiments of the present invention, it is nevertheless to be understood that minor changes may be made therein without departing from the spirit and scope of the inven- N tion asclaimed.

I claim:-

1. In a combined water heater and heat deiiector" attachment for fin'naces, a furnace having an inclosing water jacket. a water heater in 36 the furnace'adjacent the lower end of the water jacket and having a. central opening` therein, a defiector set into the opening, U-shaped supports carried peripherally of the water heater and spacer blocks set in the 'supports and en- .0.

gaged with the water jacket to space the w'ater heater therefrom, means supported on the water heater and spaced from the water jacket for increasing the wall area of direct contact of the products of combustion r/wlth the water jacket, u and a burner in the furnace beneath the water heater.

2. In a combined water heater and heat defiector attachment for furnaces, a furnace having an inclosing water jacket, a water heater in 405 the furnace adjacent the lower end of the water jacket and having a opening therein, a o deilector set into the opening. U-Bhwed mpports carried perlpherally of the water heater and spacer blocks set in the-supports and engaged with the water jacket to space the water heater therefrom, means supported on the water heater and spaced from the water jacket for increasingthewallareaof directcontactofthe products of combustion with the water/jacket, a u burner in the furnace beneath the water'. heater,

apipesjvstem extending from thefurnaceto heater lelements and including a return pipe, means forming communication between the lower end of the water heater and the lower ends of the water jacket and return pipe and means forming communication between the upper end of the lwater heater and upper end of the water jacket. 00

3. vIn a combined water heater and heat de- Aflectoir attachment for furnacea'a furnace having an annular water jacket, an annular water heater concentrically positioned in the furnace g adjacent the lower end of the water jacket,

Ameans for spacing the water heater from the water jacket, a conical deilector supported centrally of -the water heater, an annular ilre brick structure supported on the water heater vertically alined with the peripheral edge of the wa- 7o ter heater for increasing the area of contact of Y the heat units with the water jacket and a burner in the furnace beneath the water heater.

4. In a combined water heater and heat de ector attachment for furnaces as set forth in 15,

wardly. of the annular re brick structure'for engagement with the inner wall of the water jacket for retaining the re brick structure centered in the furnace. i

5. In a combined water heater and heat deector attachment for furnaces, a furnacehaving an enclosing water jacket, a Water heater in the furnace adjacent the lower end of the water jacket Aand having a. central opening therein, a

deector set into the opening, U-shaped supports carried peripherally of the water heater and spacer blocks set in the supports and engaged with the water jacket to space the water heater therefroxma re brick structure supported on the water heater and carrying outwardly projecting blocks engaged with the-water jacket and some of said blocks resting on the blocks mounted inthe U-shaped supports, and v a burner in the furnace beneath the water heater.

RAYMOND F. STURGIS. 

